export default class JSBI {
  private constructor(length: number, sign: boolean);
  private length: number;
  private sign: boolean;

  static BigInt(from: number|string|boolean|object): JSBI;

  toString(radix?: number): string;
  static toNumber(x: JSBI): number;

  static unaryMinus(x: JSBI): JSBI;
  static bitwiseNot(x: JSBI): JSBI;

  static exponentiate(x: JSBI, y: JSBI): JSBI;
  static multiply(x: JSBI, y: JSBI): JSBI;
  static divide(x: JSBI, y: JSBI): JSBI;
  static remainder(x: JSBI, y: JSBI): JSBI;
  static add(x: JSBI, y: JSBI): JSBI;
  static subtract(x: JSBI, y: JSBI): JSBI;
  static leftShift(x: JSBI, y: JSBI): JSBI;
  static signedRightShift(x: JSBI, y: JSBI): JSBI;

  static lessThan(x: JSBI, y: JSBI): boolean;
  static lessThanOrEqual(x: JSBI, y: JSBI): boolean;
  static greaterThan(x: JSBI, y: JSBI): boolean;
  static greaterThanOrEqual(x: JSBI, y: JSBI): boolean;
  static equal(x: JSBI, y: JSBI): boolean;
  static notEqual(x: JSBI, y: JSBI): boolean;

  static bitwiseAnd(x: JSBI, y: JSBI): JSBI;
  static bitwiseXor(x: JSBI, y: JSBI): JSBI;
  static bitwiseOr(x: JSBI, y: JSBI): JSBI;

  static asIntN(n: number, x: JSBI): JSBI;
  static asUintN(n: number, x: JSBI): JSBI;

  static ADD(x: any, y: any): any;
  static LT(x: any, y: any): boolean;
  static LE(x: any, y: any): boolean;
  static GT(x: any, y: any): boolean;
  static GE(x: any, y: any): boolean;
  static EQ(x: any, y: any): boolean;
  static NE(x: any, y: any): boolean;
}